Patents by Inventor Wai Hung Liu

Wai Hung Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lighting device
    Patent number: D935078
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: November 2, 2021
    Assignee: Energizer Brands, LLC
    Inventors: Sin Kwan Chan, Wai Hung Liu, Michael Jerome, H. Y. Lam